The federal agency that oversees the safety of the nation's pipelines failed to follow through on congressional reforms that could have made a difference in a May break that created the largest coastal oil spill in California in 25 years, a House committee chairman said Tuesday.

In a rare display of agreement on Capitol Hill, Republicans and Democrats on the Energy and Power Subcommittee expressed frustration with inaction by the Pipeline and Hazardous Materials Safety Administration, which has yet to complete more than a dozen requirements outlined in a 2011 federal law.

Among the unfinished work is revising regulations to establish specific time periods for notification of authorities after an accident is confirmed. The new rule would require notice as quickly as possible and always within an hour.

The owner of the California line, Plains All American Pipeline, has been criticized for taking about 90 minutes to alert federal responders after confirming the spill near Santa Barbara.

"Some of these provisions I am convinced would have made a difference in the recent oil spill in Santa Barbara had they been implemented in a timely manner," said Rep. Fred Upton, a Michigan Republican who chairs the House Committee on Energy and Commerce.

Other incomplete requirements include issuing regulations on shut-off valves for new lines that can quickly stop the flow of gas or oil in an accident and regulations that would require leak detection systems on hazardous liquid pipelines and establish leak-detection standards, according to the committee.

The agency has completed 26 of 42 reforms from the 2011 law, but the California spill has given new urgency to questions about the agency's effectiveness and its progress on the remaining requirements.

The failed line in California released up to 101,000 gallons of oil after a breach along a heavily corroded section of pipe. An estimated 21,000 gallons reached the Pacific Ocean and goo washed up on beaches as far as 100 miles away.

It's not clear why the problems with the pipe were not detected by company inspections.

Democratic Rep. Lois Capps, whose district includes the coastline where the spill occurred, said she was alarmed that inspections underestimated corrosion that had occurred in the pipeline.

"There's clearly a problem here," Capps said.

Federal regulations require the company to notify the National Response Center, a clearinghouse for reports of hazardous-material releases, "at the earliest practicable moment." State law requires immediate notification of a release or a threatened release.

Plains All American's internal planning documents repeatedly stress the importance of notifying the government of a leak as quickly as possible.

Records filed by Santa Barbara County indicate that firefighters who arrived at the scene just before noon on May 19 quickly recognized that some sort of leak or spill had occurred. Crude was gushing from a bluff like a fire hose "without a nozzle," the records said.

However, company employees at the scene did not confirm a leak until about 1:30 p.m. and it would be nearly 3 p.m. before the company would contact the response center. By then, the federal response led by the Coast Guard was underway.

At the hearing, Democratic Rep. Frank Pallone of New Jersey told the agency's interim executive director, Stacy Cummings, that he was "deeply concerned about PMHSA's ability to carry out its mission."

He also said the Obama administration shares some of the blame for the lack of progress because the White House Office of Management and Budget takes so long in evaluating proposed regulatory changes.

Cummings said OMB insight has always led to a better product, in her experience. She added that the agency is making progress but did not give lawmakers a detailed timeline for completion.

"We share your concern and sense of urgency," she told lawmakers.

Cummings said the pipeline will remain shut until the cause of the break is determined and any other risks are fixed. The agency is boosting staff for safety inspections and accident investigations.

She estimated that final results of the investigation are a few months away.

Rep. Bobby Rush, a Chicago Democrat, expressed dismay with Plains All American after it reported a spill at an Illinois pumping station last week. Rush called the spill of about 4,000 gallons troubling, coming shortly after the California break.